National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

53°F

12°C

Humidity 93%
Wind Speed NW 5 mph
Barometer 29.95 in (1013.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 5 Nov 6:56 am CST
Extended Forecast for

Lockhart TX

  • Today

    Today: Sunny, with a high near 82. Calm wind becoming south around 5 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Light and variable wind becoming north northwest 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 54. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 72. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 72 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 52. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 52 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 66. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 47. North northeast wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers. Mostly sunny, with a high near 69. North wind around 5 mph becoming calm.

    High: 69 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 82. Calm wind becoming south around 5 mph.
Tonight
Partly cloudy, with a low around 55. Light and variable wind becoming north northwest 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Friday
Sunny, with a high near 76. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Increasing clouds, with a low around 54. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 72. North northeast wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 52. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 66. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 47. North northeast wind around 5 mph becoming calm in the evening.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 69. North wind around 5 mph becoming calm.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 47.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 50.
Veterans Day
Mostly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
5:42 am CST Nov 5, 2026
Forecast Valid:
7am CST Nov 5, 2026-6pm CST Nov 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation